as already mentioned the cpap / apap machine does not use oxygen its just air it blows up your nose which in turn keeps your airway passage open which enables you to get a goodnights sleep as your airway is not collapsing causing apneas ,it is also a myth that only overweight people suffer with sleep apnea anybody can suffer from it ,one of the first signs is very loud snoring

,if you are tired in the day for no reason or can fall asleep while idle at the drop of a hat all the signs are there ,usually while driving around town in a busy enviroment you are fine but its when you hit the high rd and have miles to drive it becomes tedious and boring and this is when your head starts to drop and you have to give yourself a shake to keep going ,if your gp suspects you have sleep apnea they have a duty to inform dvla who will then revoke your driving license until you have been the sleep clinic and are proved to be complient on cpap / apap machine and theres no cheating it as the machine records everything ,you cant just turn your machine on for 8hrs without wearing the mask as this will show up as the pressure will not alter like it should when your breathing in and out ,once complient your clinic will advise dvla that your now complient and they will re issue your driving license with no restrictions ,depending on your council they could revoke your badges until your fit and proper ie letter from clinic or dvla stating your complient ,my council said there was no point in revoking my badges as the situation was only temp and i couldnt use them anyway as i couldnt drive because dvla had revoked my license they just said to pop in when i was complient with the letter from dvla stating i was now fit to drive which i did and they were then happy for me to continue to drive ,i have since passed two medicals no problem and continue to be 100% complient ,i found being upfront about the problem i had helped and my gp and sleep clinic went out of there way to get me complient as i drove for a living ,if you suspect you have sleep apnea dont bury your head in the sand the condition will only get worse without treatment ,good luck
http://www.britishsnoring.co.uk/phpBB2/ ... p?f=4&t=56